### 15. What is the primary reason for the increase in "hot days" and "hot nights" in Ethiopia?
A. Decreased solar radiation
B. Rising average temperatures
C. Increased rainfall
D. Reduced greenhouse gas emissions

Answer: B. Rising average temperatures

---

unit 6
---

### 1. What are the primary factors influencing soil formation in Ethiopia?
A. Climate, topography, and parent material
B. Human activities and deforestation
C. Ocean currents and latitude
D. Soil erosion and chemical weathering

---

### 2. Which of the following is NOT a type of weathering involved in soil formation?
A. Mechanical weathering
B. Biological weathering
C. Chemical weathering
D. Atmospheric weathering

---

### 3. What is the primary characteristic of Vertisols in Ethiopia?
A. High organic content and low fertility
B. Heavy clay soils that crack when dry
C. Sandy texture and high water retention
D. Found only in desert regions

---

### 4. Which soil type in Ethiopia is associated with high rainfall and leaching of soluble minerals?
A. Vertisols
B. Nitosols
C. Fluvisols
D. Xerosols

---

### 5. What is the main cause of soil degradation in Ethiopia?
A. Overuse of renewable energy
B. Deforestation and overgrazing
C. Excessive rainfall and flooding
D. Lack of volcanic activity

---

### 6. Which of the following is a biological control measure for soil erosion?
A. Terracing
B. Reforestation
C. Check dams
D. Contour ploughing

---

### 7. What is the primary factor controlling the distribution of natural vegetation in Ethiopia?
A. Ocean currents
B. Altitude and rainfall
C. Soil pH
D. Human settlement patterns

---

### 8. Which vegetation type in Ethiopia is characterized by tussock grasslands and mosses?
A. Forest Region
B. Afro-alpine Region
C. Woodland Savannah Region
D. Steppe Region

---

### 9. What is the main reason for the degradation of natural vegetation in Ethiopia?
A. Excessive rainfall
B. Overgrazing and deforestation
C. Lack of sunlight
D. Volcanic activity

---

### 10. Which of the following is a rare animal found in the Semien Mountains National Park?
A. Gelada Baboon
B. African Elephant
C. Flamingo
D. Zebra

---

### 11. What is the primary purpose of establishing national parks in Ethiopia?
A. Urban development
B. Wildlife conservation and tourism
C. Agricultural expansion
D. Mining activities

---

### 12. Which of the following is a challenge to wildlife conservation in Ethiopia?
A. Excessive rainfall
B. Illegal wildlife trade
C. Lack of volcanic activity
D. Low population growth

---

### 13. What is the dominant species in the Juniper Woodland Savannah Region?
A. Acacia etbaica
B. Juniperus procera
C. Ficus sur
D. Erica arborea

---

### 14. Which soil type in Ethiopia is formed from recent alluvial deposits?
A. Nitosols
B. Fluvisols
C. Vertisols
D. Lithosols

---

### 15. What is the primary cause of chemical degradation in soils?
A. Excessive rainfall
B. Nutrient depletion and toxic chemical buildup
C. Overgrazing
D. Mechanical weathering

---

### Answers:
1. A
2. D
3. B
4. B
5. B
6. B
7. B
8. B
9. B
10. A
11. B
12. B
13. B
14. B
15. B

7. What is the primary use of the Awash River in Ethiopia?
A. Irrigation 
B. Hydroelectric power generation 
C. Transportation 
D. Fishing


B. Hydroelectric power generation

The primary use of the Awash River in Ethiopia is for hydroelectric power generation. The river is dammed at several points along its course to create reservoirs that are used to generate electricity through hydroelectric power plants. This helps to provide a source of renewable energy for the country

👮‍♀️Happy International Women’s Day👩‍🦰

On behalf of the Dire Dawa University Students Union (DDU) all ddu students we extend our heartfelt appreciation to all the incredible women who continue to inspire, lead, and shape our communities.

Today, we celebrate your strength, resilience, and invaluable contributions to society. May this day serve as a reminder of the progress made and the journey ahead toward true equality and empowerment.

Here’s to the women who break barriers, challenge norms, and uplift others—today and every day!

With best regards,
GOSA KEBEDE
DDU SU PRESIDENT

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